Cutting and welding torch.



' A. H. JONES & H. MAQNICHOLS.

cunme AND wnome mm H.

Patented Api. 9; l9l&

APPLICATION FILED NOV. 1. 1915.

l mga m,

INVENTORS ATTORNEYS.

a no ll ill a amen H. Jones aim oneness 1a. MAcNICHQLS, or OAKLAND, carriiozeiara, assrcnons,

'll tlh l l itlhn BY DIRECT D MESNE ASSIGZIMEILTTS, NE-HALF T1) SSAII) JONES AND ONE-HALF TO 1 L. WILDES, Q OAKLAND, GALIFOENIA.

CUTTING AND WELDING TORGl-I.

mum-am Specification of Letters Patent.

Application filed November 1, 1915. Seria11l'o. 59,079.

To all whom it may concern: I

Be it. known that we, ALLAN H. Jones and CHARLES, MAONIOi-IOLS, citizens of the United States, residing at Oakland, in the county of Alameda and State of California, have invented certain new and useful Improvements in Cutting and Nelding Torches, of which the following is a specification;

The present invention relates to the class of gas-burning torches for industrial pur- .poses, and more particularly to a combined welding and cutting torch designed caps cially for use with alnixture oi acetylene and oxygen gases.

In devices for this purpose it 'is necessary that acetylene and oxygen, at a relatively low pressure, be brought together in some suitably formed chamber or passage, and thoroughly IDIXBCl therein to form a homogeneous gas of uniform composition. This 3 gas, or inlxture oi gases, must then be led to a suitable burner-head, and thence dis-- charged in such a manner that, when 1gn1ted, a relatively long pointed flame results.

When the torch is used for cutting metals, a separate jet of oxygen at a relatively high I pressure must be discharged into or in-close proximity to the flame-jet, said high'pressure oxygen jet-being i'orthe purpose of burning the metal already heated" to the proper temperature by the Ozzy-acetylene flame.

The object of the present invention, therefore, is to provide a cutting and welding torch which is capable of naming two gases, as for example, oxygen and acetylene, into a .iomogeneous mixture of uniform quality;

which discharges the gaseous inimkure time formed-1n a manner toprovlde a flame o1;

the-most desirable form and of the highest 1 ossible tein erature Without dan er of the P a flame strikino hack into the gas passages or chambers w i the torch; and which can eet an oxygen cutting jet in 2' Get etl'eetive position with respect to arne; and by these characteristics to better, more rapid-and more eiiicient the devices at present known to 'th e lnrants. I i

in order to comprenend'the invention,

i ing drawings, in. which head, enlarged.

to be obtained than are possible with reference should be had to the Figure l is an elevation of the device, the

stoclr or handle being'omitted. v

Fig. 2 is a sectional view of the burner Fig. 3 is a sectional View of the mixing head, enlarged.

Figs. 4 and 5 are transverse sections of ,he burner, taken respectively on the lines w-e-a? and g -3 or". 2 of the drawings,

Patented a es, leis.-

accompanytill and viewed in the directions of the arrows.v I

In Fig. 3 of the drawings, the numeral 1 represents a substantially cylindrical stock, suitably'formedof'wood or other material, which serves both as a handle by which. the

torch may be grasped and manipulated, and

as a support for the acetylene tube 2, the low-pressure oxygen tube 3 and the high pressure oxygen tube 4. therewithin. The tube 2 is fitted at its outer end with a corn trol valve 5, Fig. l of'the drawings, and,

beyond said control valve, a suitably formed fitting 6 to which may be attached a flexible tube, not shown in the drawings, for conducting acetylene into the said tube-2.

The tube 3 is similarly fitted with a control valve 7 and a connection 8 adapted to receive a flexible tube, not shown inthe drawings, "ion-supplying oxygen to the said tube 3. Between the valve 7 and the hose connection 8-, a l or branch 9 leads ed and connects with the highpressure tube 4, for

supplying oxygen theretol Within the l 9 is a cleansing screen 10, through which the.

high-pressure oxygen 7 must pass, held in place by the removable screw 11. A suit able control valvelQ is located in the highpr'essure oxygen tube a, operatable from outside the stockorhandle l.

The low-pressure oxygen tube 3 ends in mixing head 13, formed as shown in Fig. of the drawings, with a cylindrical interior bore or chamber liwithin which fitted stem 1.5, said stem having a central axial hole is for a portion of its length, one or more radial holes 17 connecting said central hole 16 with a transverse circumferential groove 18, 'a'xseries of spaced spiral grooves 19 connecting said'circum'ferential groove 18 wita similar circumferential groove 1' 20, and a. second series of spiral grooves 21 lead ing from the circumferential groove to the end 22 of the stem 15, the spiral of said grooves 21 being opposite to that of the first mentioned spiral grooves 19.

The mixing head 13. is formed, as shown, with a branch or T 23, to the upper end of which is connected the acetylene tube 2, and, which contains a check valve for preventing back-pressure in s id tube 2, said valve consisting of a ball 24: pressed by a spring 25 against a rnnovable seat 26. A removable plug 27 permits access to said valve. The acetylene passage 28 within said T 23 coinmunicates, as shown in Fig. 3 of the drawings, with the second circumferential groove 20 of the stem 15 within the mixing chamber 14, which is situated a distance from the hereinafter described burner head.

A "feed tube 29 is connected at one end to the mixing head 13, preferably by some form of readily detachable coupling, as, for example, a union 30. The other end of said feed tube29 ends in a substantially l shaped burner head 31, Figs. 1 and 2 of the drawing". In the preferred form illustrated herein, this burner head 31 is at right angles end to end thereof.

to thefeed tube 29, although it may be formed at 'any other angle in accordance with the necessities of any particular work for which the torch maybe designed.

The burner head 31 has a cylindrical interior bore 32, l i 2 of the drawings, a portion'33 of which is enlarged and threaded, forming a shoulder A burner stem '35, having a collar 36, two transverse circumferential grooves 37 and 3S, and a series ofs-hallow longitudinal grooves 39, Figs. 2 and -of the drawings, extending between said transverse grooves, fits within the'head 31, and is held therein by the collar 36 being clamped between the-slunilder 3,4 and a nut 40 screwed into the enlarged portion 33 of the bore of said head. I

The burner stem 35 is also formed with an axial hole or passage ll running from The upper or rear end of said stein35'is connected, preferably by means of a union 42, to the high-pressure oxygen tube l. The opposite or forward end of the burner stem 35 is inclosed by a closely fitting'burncr tip 4&3, rcniovably at- 'tachcd to the head 31, and extending a slight distance beyond the end of said stem 35- to form a shield or hood 4%. fl series of spaced, substantially longitudinal, inclined bores 47 Figs. 2 and 5 of the drawlugs, are 'l orinvd in the stem 55 cxle ling; to the forward end thereof from the hallsverse groove 38.

Acetylene gas, entering the mixing head 13 through the passage 28, Fig. 3 of the drawings, meets, in the transversegroove 20, a stream l)f-()X \',L'IOEl which has been given a rotary whirling motion by the spiral.

grooves 19; The 'tn'e gases are then given an opposite whirling motion by the spiral grooves 21, and pass out of the mixing head 13 and through the "feed tube 29, to the burner head 31. Entering said head 31 opposite the transverse groove 37, Fig. 2 of the drawings, in the stem 35, the mixed gases pass through the longitudinal grooves or passages 39, between said stem 35 and the walls of the head 31 and the tip as, and finally out through the bores 45.

@n account of the relative positions of said bores 45, the issuing gaseous mixture forms a cone, and when ignited provides'a flame of the mostfavorable "form. When it is desired to use the device as a cutting torch, oxygen at a-relatively high pressure is admitted to the central opening or passage 4&1 oi the burner stem 35, through the valve 12 and the tube 4, and issues as a single jet in the center of the flame cont.

The tortuous oath which the ases are .1 1 h constrained to :tollow through the mixing head 13, and the length of the fced'tube 2S) insure most intimate and perfect mixture of said gases before they reach the heated parts ofthe burner head, thus providing a flame of the highest possible temperature.

Back-firing of the unburned gases is prevented by the small areas of the passages in the burners head, particularly the bores Hill cutting such metals as iron or steel. It is to be understood, however, that the torch may alsoloe used with other gases, such as hydrogen .and oxygen or commercial illuminating gas and oxygen, to produce a flame of lower temperature than the (my-acetylene flame. "Wetherefore do not limit ourselves to a torchforburning the particular gases mentioned above, nor to the preferred form and construction of the device as herein described and illustrated, but onthe contrary What we'claim as new and desire to protect by Letters Patent, is

1. In a torch forthe described purpose,

the combination wiih a burner head of a mixing head connected thereto at a distance.

therefrom. a mixing chamber within said last mentioned head, a longitudinally ported stem situated within said mixing chamber and provided with radially disposed outlets communicating with spirally disposed grooves on the exterior surft'ace of the stein,

. oxygen messes.

thereof toward its forward end, and a feed tube, connecting the mixing chamber with the burner heed.

z, in a torch for the described purpose, and in combination as mixing head provided u a. valved passageway communicating with said chamber, a longitudinally disposed mixing stem situated within said mixlug chamber and formed exterioilyyvitli an annular groo v provided tvitn oppodisposes spiral grooves communicat ing with said annular groove, and said stem further provided at its forward end with a longitudinally disposed bore communicating with one s ries or". said spiral grooves by radially disposed outlets, and means for snap plying through said stem to the mixing chamber and through the valved passage'in lie mixing head respectively astream' of oxygen and combustible gas. I

3. In a torch for the described purpose,- the combination with :1 burner bead, a mixing head provided with a mixing chamberi or combustible gas midi-oxygen situated at a distance remoue from theburner bead,

; a feed tube connection between tlie said mixing head and the burner head, a stem dolied by the burner head and tacliably mounted within 'the'burner liead and provided with relatively long longitudinally disposed passageways arranged Within its surface and terminating in converging bores for tlie flow tberethrougli and dis,-

charge therefrom of a gaseous mixture passing through the lower end of the body of said stem, and said stem further-provided tlnoughout the length hereof with a con trally disposed passageway for the" flow tlici'etlirougli of oxygen under pressure, a valve controlled supply tube for admitting oxygen under liigli pnessure to the discharge end of the burner stein through 'se'd centi-ally disposed. passageway, and a-liood C211"- projcoted a distance beyond the outlet end of the stem arranged therein.

ls in a torch of the character described, the, ombination with burner head, of a mixing chamber communicating therewith, a longitudinally sported stein having raclially disposed ports leading therefrom discharging into the mixing chamber, mixing means Within said chamber, means for in troducing independent supplies of combustian interioi'ly disposed mixing chamber ble. :luel producing fluids to the chamber,

one of tlxe'fluids being introduced to the mixing chamber through tlie'porjts in the stem, and means connecting the mixing chamber with the burner head.

5, In a torch of the character described, the combination with a burner head, o'l' a mixing chamber, and a connection between said burner bead and the chamber, means for introducing independent chai'ges ota fuel producing fluid and a combustion sup porting fluid to the mixing chamber at different'points, mixing means insaidoliambet for importing a circuitous movement to one'olf the fluids prior to tlieoadmission of the other fluid thereto, the said mixing means being formed to compel the combined fluids to take circuitous movement, after the introduction ofcne to the other, substantially as described.

.6. A torch of the character described,

comprising a burner head, a'mixing' chamber, means connecting said burner head and mixing chamber, means for introducing oxygen to said mixing chamber, means Within the mixing chamber for imparting a movement to the oxygen While'the same is passing therethrough, and means for introducing gases to the mixing chamber to commingle with the iupiclly moving oxygen, said means withjin the mixing chamber cans-- in'g a further circuitous movement of the oxygen and gas, prior to its discharge to the burner lieacl, i

7.311 a torch for the clescribe cl purpose, the combination with a burner bead, of a mixing head provided with a mixing chainber for combustible gas and oxygen situated at a distance remote from the burner head, e feed tube connection between the saidniixing -l eacl and the burnerliead, a stem detechably mounted Within the burner head and provided with longitudinally disposed passageways terminating in suitable outlets for the flow therethrough and discharge therefrom of a gaseous mixture, and said stein being further provided throughout the length thereof with a centrally disposed passageway "for theffiow tlieretln'ough of oxygen under pressure, a valve controlled supply tube for admitting oxygen under high pressure to the discharge end of the burner stem through said centrally disposed passageway, and a hood carried by the burner head and projected a distance beyond the outlet end of the stem ailrangcd therein.

8. In a torch of the character described, the combination with a bur 'nei' head, of a mixing chamber, a pipe connecting said mixing chambefwitll the burner head, a member located within the mixing chamber and having a spiral passageway, means for introducing oxygen to said mixing chamber to pass. througi said spiral. passageway to impart to the oxygen a whirling movement,

and means for introducing gas to the whirling oxygen, the said mixing member having on one side thereof a spiral passageway leading in a direction opposite to that of the first mentioned spiral passageway for reversing the direction of the circular movement of the oxygen after the admission of the to completely commingle the same with the oxygen prior to its discharge to the burner head.

9. A. torch of the character described comprising a mixing chamber and a burner head, a connection bet vcen said chamber and head, means for introducing a fuel producing fluid to the mixing chamber, a mem ber located in said chamber for imparting to said fluid ,a whirling movement, means leading to the mixing chamber for introduc mg a combustion supporting fluid thereto, the said member within the mixing chamber being formed to compel the combined fluids after the admission of one to the other to take a whirling course prior to the discharge thereof to the burner head.

10. 111 a torch of the character described,

. a member located *ithin said mixing chamber for causing the oxygen to travel in a circuitous path, means for introducing gas to the traveling oxygen, the said mixing member being formed to cause the oxygen and gas to travel in a circuitois path, the direction of movement of the oxygen and gas being the reverse of the direction of movement of the oxygen to completely mix the oxygen and gas prior to its discharge to the burner head.

11. In a torch of? the character described, the combination with a burner head, of a inixing'chamber and a comnnmieation be tween said chamber and head, means for introducingindependent supplies of a. fuel producing fluid and a combustion supportmixing chamber, means for connecting theburner head with the mixing chamber, means for introducing at dili erent points in dependent supplies of a fuel producing fluid and a combustion supporting fluid, means within said chamber to cause one of the fluids to travel in a spiral direction prior to the admission of the other fluid thereto, said means also compelling the combined fluids to move in a spiral direction prior to the discharge thereof of the burner head.

13. A torch of the character described comprising a mixing chamber, and a burner head, a connection between said mixing chamber and the burner head, means for introducing a fuel producing and a combustion supporting fluid independently into the mixing chamber, means within the mixmg chamber for causing a movement of one flu-id prior to the admission of the other thereto, and for compelling a circuitous movement of the combined fluids after the admission of one to the other.

In testimony whereof we have signed our names. to this specification in the presence of two subscribing witnesses.

ALLAN H. JONES. CHARLES H. MAGNICHOLS. Jitnesses S. HARDIN, Geo. Momunn. 

